(3WHjYI GdHMK GdSjchdhLi (B/ s - (3eMeO YKeGf fLGJi (B((3eQGLY(B)s; (3gGjeGf (B,(3Q(B.(3i(B.s; (3YHOGdQMef YjShis ([S.N] : (3OGQ GdTQhb , s, 1989)
Keywords: (3Yde GdfaSs; (3Yde faS Gdfehs; (3Yde GdfaS GdJWHjbis